Reactive dividing wall columns: A comprehensive review

Weinfeld, Jeffrey A.; Owens, Scott; Eldridge, R. Bruce

doi:10.1016/j.cep.2017.10.019

Cited by 75 publications

(51 citation statements)

References 35 publications

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“…Nonetheless, R-DWC technology can add significant value to new chemical processes, with a strong potential to improve production yields, to save 15-75% in energy usage and over 20% in capital cost, as compared to conventional processes. 28 The design and control of R-DWC can draw on the extensive experience of RD and DWC, respectively. The key limitations of R-DWC relate to: catalyst formulation, hold-up & residence time, pressure drop & flooding, and the need for equal pressure drop on the two sides of the dividing wall.…”

Section: Reactive Dividing-wall Columnsmentioning

confidence: 99%

Reactive Distillation: Stepping Up to the Next Level of Process Intensification

Kiss

Jobson

Gao

2018

Ind. Eng. Chem. Res.

140

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Reactive distillation (RD) is an efficient process intensification technique that integrates chemical reaction and distillation in a single apparatus. The process is also known as catalytic distillation when a solid catalyst is used. RD technology has many key advantages such as reduced capital investment and significant energy savings, as it can surpass equilibrium limitations, simplify complex processes, increase product selectivity and improve separation efficiency. However, RD is also constrained by thermodynamic requirements (related to volatility differences and heat of reaction), the need to align the reaction and distillation operating conditions, and the availability of catalysts that are active, selective and with sufficient longevity. This paper is the first to provide an overview and insights into novel integrated reactive distillation technologies that combine RD principles with other intensified distillation technologies-e.g. dividing-wall column (DWC), cyclic distillation, HiGee distillation, heat-integrated distillation column (HIDiC), and membrane-, microwaveor ultrasound-assisted distillation-potentially leading to the development of new processes and applications.

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Section: Reactive Dividing-wall Columnsmentioning

confidence: 99%

Reactive Distillation: Stepping Up to the Next Level of Process Intensification

Kiss

Jobson

Gao

2018

Ind. Eng. Chem. Res.

140

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“…In recent years, a significant number of extended applica-tions were added like an extractive DWC [10], a multipurpose DWC [11], a reactive DWC [12], and the Kaibel column, a four-product DWC with only one partitioning wall [13]. In recent years, a significant number of extended applica-tions were added like an extractive DWC [10], a multipurpose DWC [11], a reactive DWC [12], and the Kaibel column, a four-product DWC with only one partitioning wall [13].…”

Section: Dividing-wall Columnsmentioning

confidence: 99%

“…By covering a wide range of different applications, the DWC can nowadays be considered as a mature technology. In recent years, a significant number of extended applications were added like an extractive DWC , a multipurpose DWC , a reactive DWC , and the Kaibel column, a four‐product DWC with only one partitioning wall . The penetration to niche applications underlines the increasing importance of DWC technology for the chemical industry.…”

Section: Introductionmentioning

confidence: 99%

Multiple Dividing‐Wall Columns – Current Status and Future Prospects

Ränger

Preißinger

Grützner

2018

Chemie Ingenieur Technik

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Dividing-wall columns are a well-known and proven technology to separate a ternary mixture into pure products with significant savings in capital and operational costs compared to standard two-column configurations. A consequent advancement are multiple dividing-wall columns, which allow the separation of multicomponent mixtures in one column shell. However, due to their high complexity, no practical realization has been reported yet. This paper briefly discusses the current state of the art followed by a detailed description of a robust initialization of rigorous flow sheet simulations based on V min diagrams. With the data from the simulation a multi-objective optimization can be performed. The knowledge from the simulations shall be used to build the first multiple dividing-wall column worldwide.

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“…It combines the advantages of the dividing-wall column like reduced energy demand for separation [1,2] and the advantages of reactive distillation like higher conversion rates and selectivity [3,4]. Weinfeld et al call the RDWC an apparatus of second-level process integration [5] while Dejanović et al [6] refer to the RDWC as ''a step towards the ultimate sustainability in process industries''. Simulation-based studies already showed a significant energy-saving potential compared to a sequence of reactive distillation and conventional distillation columns [7].…”

Section: Introductionmentioning

confidence: 99%

“…The growing number of published research articles in the past 15 years shows the increasing interest in RDWC technology. A comprehensive review of these works is presented by Weinfeld et al [5]. Several experimentally validated steady-state models are available [8][9][10] and methods for an efficient column design have been developed [11,12].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Decentralized Process Control for Reactive Dividing‐Wall Columns

Egger

Fieg

2020

Chem Eng & Technol

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The reactive dividing-wall column (RDWC) presents a highly integrated process that enables significant reductions in investment costs and energy consumption. However, the high degree of integration of this apparatus causes numerous interactions between kinetics, vapor-liquid equilibrium, and mass transfer. To ensure a reliable operation of the RDWC, suitable control schemes need to be developed and experimentally validated. A decentralized control scheme for the RDWC is presented and for the first time experimentally investigated on an RDWC pilot plant. A comparison of experimental and simulated data is carried out and shows good agreement.The transesterification of n-butyl acetate with 1-hexanol (Eq. (1)), catalyzed by the immobilized enzyme Novozym 435, is selected as reference system. A detailed investigation of the

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Reactive dividing wall columns: A comprehensive review

Cited by 75 publications

References 35 publications

Reactive Distillation: Stepping Up to the Next Level of Process Intensification

Reactive Distillation: Stepping Up to the Next Level of Process Intensification

Multiple Dividing‐Wall Columns – Current Status and Future Prospects

Experimental Investigation of Decentralized Process Control for Reactive Dividing‐Wall Columns

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